I use GCDWebServer, run method -addHandlerForMethod:path:requestClass: twice with different parameter "path". then NSLog webServer.serverURL,
first time it success:192.168.0.121:8080,
but second time it fail:nil
why? please help me.
#import "ServerMock.h"
#implementation ServerMock
+ (void)mockWithMethod:(NSString *)method path:(NSString *)path timeoutInterval:(NSTimeInterval)timeoutInterval JSONObject:(NSDictionary *)JSONObject port:(NSUInteger)port serverURL:(void (^)(NSURL *serverURL))block
{
GCDWebServer *webServer = [GCDWebServer new];
[webServer addHandlerForMethod:method path:path requestClass:[GCDWebServerRequest class] asyncProcessBlock:^(GCDWebServerRequest *request, GCDWebServerCompletionBlock completionBlock) {
GCD_DELAY_AFTER(timeoutInterval, ^{
GCDWebServerDataResponse *response = [GCDWebServerDataResponse responseWithJSONObject:JSONObject];
completionBlock(response);
});
}];
[webServer startWithPort:port bonjourName:nil];
block(webServer.serverURL);
}
#end
//////////////////////////////////////////////
- (void)viewDidLoad
{
NSDictionary *dict = #{
#"11111":
#"22222222"
};
[ServerMock mockWithMethod:#"GET"
path:#"/123"
timeoutInterval:0
JSONObject:dict
port:8080 serverURL:^(NSURL *serverURL) {
NSLog(#"________%#", serverURL);
}];
NSDictionary *dict2 = #{ #"2222222": #"111111111"};
[ServerMock mockWithMethod:#"GET" path:#"/321" timeoutInterval:0 JSONObject:dict2 port:8080 serverURL:^(NSURL *serverURL) {
NSLog(#"________%#", serverURL);
}];
}
Check the Xcode console for errors. The problem is most likely that you are you not stopping the GCDWebServer instance after calling the block, so it's still running and holding on port 8080, preventing new servers to start.
Related
I am facing app extension close issues , please tell me if anyone know what wrong am doing.I am using action extension after preform some action inside extension i need to return response back.
Sample Code
// With Success Case
- (void) completeActionWithItems: (NSString *) response {
NSExtensionItem *extensionItem = [[NSExtensionItem alloc] init];
extensionItem.attachments = #[[[NSItemProvider alloc] response typeIdentifier: (NSString *)kUTTypePlainText]];
[self.extensionContext completeRequestReturningItems: #[extensionItem] completionHandler: nil];
}
// With Error Case
- (void) completeActionWithError: (NSError *) error {
[self.extensionContext cancelRequestWithError: error];
}
With Success Case working fine but some time is not closing,
With Error Case not working above code.
Please let me know what went wrong.Thanks
When you create an action extension, this is the default method which will close the Action Extension View Controller:
- (IBAction)done {
// Return any edited content to the host app.
// This template doesn't do anything, so we just echo the passed in items.
[self.extensionContext completeRequestReturningItems:self.extensionContext.inputItems completionHandler:nil];
}
Since this method is already provided, you should just try calling it from your success method.
// With Success Case
- (void) completeActionWithItems: (NSString *) response {
NSExtensionItem *extensionItem = [[NSExtensionItem alloc] init];
extensionItem.attachments = #[[[NSItemProvider alloc] response typeIdentifier: (NSString *)kUTTypePlainText]];
[self.extensionContext completeRequestReturningItems: #[extensionItem] completionHandler: nil];
// Call to "done" method
[self done];
}
I'm writing a mac app that runs its own web server, using the GCDWebServer library (https://github.com/swisspol/GCDWebServer). My app delegate handles GET requests like so:
__weak typeof(self) weakSelf = self;
[webServer addDefaultHandlerForMethod:#"GET"
requestClass:[GCDWebServerRequest class]
processBlock:^GCDWebServerResponse *(GCDWebServerRequest* request) {
return [weakSelf handleRequest:request];
}];
And then the handleRequest method returns the response data, something like:
return [GCDWebServerDataResponse responseWithHTML:#"<html><body><p>Hello World!</p></body></html>"];
So far so good. Except now I want the handleRequest method to use NSSpeechSynthesizer to create an audio file with some spoken text in it, and then wait for the speechSynthesizer:didFinishSpeaking method to be called before returning to the processBlock.
// NSSpeechSynthesizerDelegate method:
- (void)speechSynthesizer:(NSSpeechSynthesizer *)sender didFinishSpeaking:(BOOL)success
{
NSLog(#"did finish speaking, success: %d", success);
// return to processBlock...
}
Problem is, I have no idea how to do this. Is there a way to return from the speechSynthesizer:didFinishSpeaking method into the processBlock defined above?
You need to run the speech synthesizer on a separate thread with its own run loop, and use a lock to allow your request thread to wait for the operation to complete on the speech thread.
Assuming the web server maintains its own thread(s) and runloop, you can use your app's main thread to run the speech synthesizer, and you can use NSCondition to signal completion to the web response thread.
A basic (untested) example (without error handling):
#interface SynchroSpeaker : NSObject<NSSpeechSynthesizerDelegate>
- (id)initWithText:(NSString*)text outputUrl:(NSURL*)url;
- (void)run;
#end
#implementation SynchroSpeaker
{
NSCondition* _lock;
NSString* _text;
NSURL* _url;
NSSpeechSynthesizer* _synth;
}
- (id)initWithText:(NSString*)text outputUrl:(NSURL*)url
{
if (self = [super init])
{
_text = text;
_url = url;
_lock = [NSCondition new];
}
return self;
}
- (void)run
{
NSAssert(![NSThread isMainThread], #"This method cannot execute on the main thread.");
[_lock lock];
[self performSelectorOnMainThread:#selector(startOnMainThread) withObject:nil waitUntilDone:NO];
[_lock wait];
[_lock unlock];
}
- (void)startOnMainThread
{
NSAssert([NSThread isMainThread], #"This method must execute on the main thread.");
[_lock lock];
//
// Set up your speech synethsizer and start speaking
//
}
- (void)speechSynthesizer:(NSSpeechSynthesizer *)sender didFinishSpeaking:(BOOL)success
{
//
// Signal waiting thread that speaking has completed
//
[_lock signal];
[_lock unlock];
}
#end
It's used like so:
- (id)handleRequest:(id)request
{
SynchroSpeaker* speaker = [[SynchroSpeaker alloc] initWithText:#"Hello World" outputUrl:[NSURL fileURLWithPath:#"/tmp/foo.dat"]];
[speaker run];
////
return response;
}
GCDWebServer does run into its own threads (I guess 2 of them) - not in the main one. My solution needed to run code in Main Thread when calling the ProcessBlock.
I found this way that suits my needs:
First declare a weak storage for my AppDelegate: __weak AppDelegate *weakSelf = self;. Doing so I can access all my properties within the block.
Declare a strong reference to AppDelegate from within the block like so: __strong AppDelegate* strongSelf = weakSelf;
Use NSOperationQueue to align the operation on mainThread:
[[NSOperationQueue mainQueue] addOperationWithBlock:^ {
//Your code goes in here
NSLog(#"Main Thread Code");
[strongSelf myMethodOnMainThread];
}];
In this way myMethodOnMainThread surely will run where it's supposed to.
For sake of clarity I quote my relevant code section:
webServer = [[GCDWebServer alloc] init];
webServer.delegate = self;
__weak AppDelegate *weakSelf = self;
// Add a handler to respond to GET requests
[webServer addDefaultHandlerForMethod:#"GET"
requestClass:[GCDWebServerRequest class]
asyncProcessBlock:^(GCDWebServerRequest* request, GCDWebServerCompletionBlock completionBlock) {
__strong AppDelegate* strongSelf = weakSelf;
[[NSOperationQueue mainQueue] addOperationWithBlock:^ {
//Your code goes in here
NSLog(#"Main Thread Code");
[strongSelf myMethodOnMainThread];
}];
GCDWebServerDataResponse* response = [GCDWebServerDataResponse responseWithJSONObject:packet];
completionBlock(response);
}];
GCWebServer supports fully asynchronous responses as of version 3.0 and later [1].
[webServer addDefaultHandlerForMethod:#"GET"
requestClass:[GCDWebServerRequest class]
asyncProcessBlock:^(GCDWebServerRequest* request, GCDWebServerCompletionBlock completionBlock) {
// 1. Trigger speech synthesizer on main thread (or whatever thread it has to run on) and save "completionBlock"
// 2. Have the delegate from the speech synthesizer call "completionBlock" when done passing an appropriate response
}];
[1] https://github.com/swisspol/GCDWebServer#asynchronous-http-responses
I have implemented the following methods from the Apple site, available on this page:
https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/URLLoadingSystem/Tasks/UsingNSURLDownload.html
//on my .h file:
#interface AppDelegate : NSObject <NSApplicationDelegate, NSWindowDelegate, NSURLDownloadDelegate>
{
BOOL allJobDone;
#private
NSURLResponse*downloadResponse;
long long bytesReceived;
}
//on my .m file:
#implementation AppDelegate
#synthesize downloadResponse = _downloadResponse;
#synthesize bytesReceived = _bytesReceived;
//.... the rest..
- (IBAction)startProcess:(id)sender {
// some code here..
[self startDownloadingURL];
}
// start below with the Apple code available here: https://developer.apple.com/library/ios/documentation/Cocoa/Conceptual/URLLoadingSystem/Tasks/UsingNSURLDownload.html
- (void)startDownloadingURL /*:sender*/
{
// Create the request.
NSURLRequest *theRequest = [NSURLRequest requestWithURL:[NSURL URLWithString:#"http://freefr.dl.sourceforge.net/project/hpc/hpc/g95/gfortran-4.9-bin.tar.gz"]
cachePolicy:NSURLRequestUseProtocolCachePolicy
timeoutInterval:30.0];
// Create the download with the request and start loading the data.
NSURLDownload *theDownload = [[NSURLDownload alloc] initWithRequest:theRequest delegate:self];
if (!theDownload) {
// Inform the user that the download failed.
NSLog(#"Download NOT started");
} else {
NSLog(#"Download started");
}
}
- (void)download:(NSURLDownload *)download decideDestinationWithSuggestedFilename:(NSString *)filename
{
NSString *destinationFilename;
destinationFilename = [[[_homeDirectory stringByAppendingPathComponent:#"Desktop"] stringByAppendingPathComponent:#"DOWN"] stringByAppendingPathComponent:filename];
[download setDestination:destinationFilename allowOverwrite:YES];
}
- (void)download:(NSURLDownload *)download didFailWithError:(NSError *)error
{
// Dispose of any references to the download object
// that your app might keep.
// Inform the user.
NSLog(#"Download failed! Error - %# %#",
[error localizedDescription],
[[error userInfo] objectForKey:NSURLErrorFailingURLStringErrorKey]);
}
- (void)downloadDidFinish:(NSURLDownload *)download
{
// Dispose of any references to the download object
// that your app might keep.
// Do something with the data.
NSLog(#"%#",#"downloadDidFinish");
}
- (void)setDownloadResponse:(NSURLResponse *)aDownloadResponse
{
NSLog(#"aDownloadResponse - %#",aDownloadResponse);
downloadResponse = aDownloadResponse;
NSLog(#"downloadResponse - %#",downloadResponse);
}
- (void)download:(NSURLDownload *)download didReceiveResponse:(NSURLResponse *)response
{
// Reset the progress, this might be called multiple times.
// bytesReceived is an instance variable defined elsewhere.
bytesReceived = 0;
// Store the response to use later.
[self setDownloadResponse:response];
}
- (void)download:(NSURLDownload *)download didReceiveDataOfLength:(unsigned long)length
{
long long expectedLength = [downloadResponse expectedContentLength];
bytesReceived = bytesReceived + length;
if (expectedLength != NSURLResponseUnknownLength) {
// If the expected content length is
// available, display percent complete.
float percentComplete = (bytesReceived/(float)expectedLength)*100.0;
NSLog(#"Percent complete - %f",percentComplete);
} else {
// If the expected content length is
// unknown, just log the progress.
NSLog(#"Bytes received - %lld",bytesReceived);
}
}
Everything seems to work, but the download is really slow. Trying the link in Safari, everything is very fast.
I get the impression that part of the code which calculates the progress (I will need for the progress indicator), has to do with the slowdown.
Does anyone know how to fix speed problems?
After countless attempts, since everything looked ok before, these two simple lines added:
NSString* userAgent = #"user";
[theRequest addValue:userAgent forHTTPHeaderField:#"User-Agent"];
they have speed up the download in a truly surprising. Perhaps even more things needs to be added, but now it's really satisfying.
I am trying to send a POST request to a server using AFNetworking, and everything seems to be working, i.e. the application is successfully pinging the server. However, the parameter values that it is sending are blank when it reaches the server even though after stepping through my code below using the debugger, the values appear to be being passed successfully. Any help on this would be greatly appreciated.
APIClient.m
#import "APIClient.h"
#import "AFJSONRequestOperation.h"
// Removed URL for privacy purposes.
static NSString * const kAPIBaseURLString = #"string goes here";
#implementation APIClient
+ (APIClient *)sharedClient {
static APIClient *_sharedClient;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
_sharedClient = [[APIClient alloc] initWithBaseURL:[NSURL URLWithString:kAPIBaseURLString]];
});
return _sharedClient;
}
- (id)initWithBaseURL:(NSURL *)url {
self = [super initWithBaseURL:url];
if (self) {
[self registerHTTPOperationClass:[AFJSONRequestOperation class]];
// Accept HTTP Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
[self setDefaultHeader:#"Accept" value:#"application/json"];
}
return self;
}
#end
Login Method in LoginBrain.m
- (void)loginUsingEmail:(NSString *)email andPassword:(NSString *)password withBlock:(void (^)(NSDictionary *loginResults))block {
self.email = email;
self.password = password;
// Removed path for privacy purposes
[[APIClient sharedClient] postPath:#"insert path here" parameters:[NSDictionary dictionaryWithObjectsAndKeys:email, #"uname", password, #"pw", nil] success:^(AFHTTPRequestOperation *operation, id responseJSON) {
if (block) {
block(responseJSON);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
if (block) {
block(nil);
}
}];
// Store user data in app?
}
Login Called Method in LoginViewController.m
- (IBAction)loginPressed {
[self.loginProgressIndicator startAnimating];
NSString *email = self.emailTextField.text;
NSString *password = self.passwordTextField.text;
[self.brain loginUsingEmail:email andPassword:password withBlock:^(NSDictionary *loginResults) {
[self.loginProgressIndicator stopAnimating];
[self.delegate uloopLoginViewController:self didLoginUserWithEmail:email andPassword:password];
}];
}
UPDATE
I tried changing the parameterEncoding as recommended here, but it did not fix the problem.
SECOND UPDATE
Here is the PHP code from the server side that is accessing the POST data. This was written by a co-worker of mine, as I don't do anything on the server side and am very unfamiliar with how it works.
header('Content-type: application/json');
$username = $_POST['uname'];
$pw = $_POST['pw'];
The server code is pretty straight forward. He has some sort of log script that checks to see what the variable values are, and he says that the client is hitting the server, but the variable values are blank.
THIRD UPDATE
This is a dump of the HTTP request by generating a print_r of the $_REQUEST variable:
Array ( [sid] => FwAqvZrfckw )
And here is a dump of the $_POST variable. As you can see, it's completely blank:
Array ( )
FOURTH UPDATE
I used Wireshark to capture the packet before it's being sent to the server, and everything appears to be in order:
Accept: application/json
Content-Type: application/x-www-form-urlencoded; charset=utf-8
And the POST parameters were all there as well. We also created a test file on the server side and just did a test POST to make sure that the code there is working, and it is.
Thank you.
With the same problem, using AFFormURLParameterEncoding was what I needed.
So just to simplify all the thread, you have to use :
[[APIClient sharedClient] setParameterEncoding:AFFormURLParameterEncoding];
I don't see anything in particular that would cause a problem here but I'll start off by giving you the steps I used to solve a similar problem.
To start, checkout the tool, Charles, which is a Debugging Web Proxy that will intercept the response from the server and should give you a more clear idea of what's going wrong. There's a 30 day free trial and it really helped me pick out the little bugs. To use it, press the sequence button and filter the results via your server url. From there you can see the request and response sent and received from the server. If the following doesn't fix your problem, post the request and response that Charles spits out.
Fix wise, try adding [[APIClient sharedClient] setParameterEncoding:AFJSONParameterEncoding] right before you send the POST request. It looks like yall are using JSON as the server-side format.
So in loginUsingEmail:
self.email = email;
self.password = password;
[[APIClient sharedClient] setParameterEncoding:AFJSONParameterEncoding];
[[APIClient sharedClient] postPath:#"insert path here" parameters:[NSDictionary dictionaryWithObjectsAndKeys:email, #"uname", password, #"pw", nil] success:^(AFHTTPRequestOperation *operation, id responseJSON) {
if (block) {
block(responseJSON);
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
if (block) {
block(nil);
}
}];
// Store user data in app?
}
Having a heck of a time with this one.
I've got a super-simple Cocoa app containing one WebView, a WebScripting API defined in the page, and a single NSObject defined on that API. When I turn on the debugger tools (in the embedded WebView), I can see the API on the JavaScript window object, and I can see my "api" property defined on that -- but when I call the API's "get" method, the arguments aren't being serialized -- when the Obj-C method gets called, the arguments are missing. See below, which hopefully illustrates:
I've combed through the docs, I've (apparently) set the appropriate methods to expose everything that needs to be exposed, and I can see the method being called. There has to be something stupid I'm missing, but as a relative newbie to this environment, I'm not seeing it.
Thanks in advance for your help!
Have you set WebKitDeveloperExtras to YES in your default user defaults when you send -[NSUserDefaults registerDefaults:]?
Depending on what version of Xcode you're using you could be getting a known error. If you're using LLDB on anything but the most recent version, it might not be giving you the right variables in the debugger. The solution has been to use GDB instead of LLDB until Apple fixes the problem. But I think they fixed the problem in the latest version. I'd change the debugger to use GDB and see if you're getting the right variables in Xcode. (Product-> Edit Scheme...-> Run -> Debugger). I came across this problem in iOS, though, so I don't know its applicability to OSX. Worth a try anyway.
I originally came across the problem here: https://stackoverflow.com/a/9485349/1147934
I process javascript in the main thread of my app from a local file stored in the apps directory. I check for beginning and ending tokens for the js functions I am executing and whether the function contains a variable.
Hopefully this can give you some good ideas for your issue. You could also do alerts in the js to see if the values post correctly as you run the app (I am sure you thought of that already, but it's worth mentioning.) Happy coding! I hope this helps!
in the .h file define:
NSMutableString *processedCommand;
NSArray *commandArguments;
In the .m file:
// tokens
#define kOpenToken #"<%%"
#define kCloseToken #"%%>"
// this will throw
-(void)executeJScriptCommand:(NSString *)aCommand {
[self performSelectorOnMainThread:#selector(executeThisCommand:) withObject:aCommand waitUntilDone:YES];
}
// this will throw
-(NSString *)executeCommand:(NSString *)command {
NSString *aCommand = [[[command stringByReplacingOccurrencesOfString:kOpenToken withString:#""]
stringByReplacingOccurrencesOfString:kCloseToken withString:#""]
stringByTrimmingLeadingAndTrailingWhitespaces];
if ([aCommand hasPrefix:#"="])
{
// variable. get value
[self getVariableFromCommand:aCommand];
}
else {
[self executeThisCommand:aCommand];
}
NSString *returnValue = [NSString stringWithString:processedCommand];
self.processedCommand = nil;
self.commandArguments = nil;
return returnValue;
}
-(void)executeThisCommand:(NSString *)aCommand {
BOOL hasError = NO;
// clear result
self.processedCommand = nil;
self.commandArguments = nil;
BOOL isFromJS = NO;
NSString *function = nil;
NSMutableArray *commandParts = nil;
#try {
// first, break the command into its parts and extract the function that needs to be called, and the (optional) arguments
commandParts = [[NSMutableArray alloc] initWithArray:[aCommand componentsSeparatedByString:#":"]];
if ([[[commandParts objectAtIndex:0] lowercaseString] isEqualToString:#"js-call"]) {
isFromJS = YES;
[commandParts removeObjectAtIndex:0];
}
// get our function, arguments
function = [[commandParts objectAtIndex:0] retain];
[commandParts removeObjectAtIndex:0];
if ([commandParts count] > 0){
if (isFromJS == YES) {
NSString *arguments = [[commandParts objectAtIndex:0] stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
if ([arguments length] > 0) {
self.commandArguments = [arguments JSONValue];
}
}
else {
self.commandArguments = [NSArray arrayWithArray:commandParts];
}
}
// build invoke
SEL sel = NSSelectorFromString(function);
if ([self respondsToSelector:sel]) {
[self performSelectorOnMainThread:sel withObject:nil waitUntilDone:YES];
// using invocation causes a SIGABORT because the try/catch block was not catching the exception.
// using perform selector fixed the problem (i.e., the try/catch block now correctly catches the exception, as expected)
}
else {
[appDelegate buildNewExceptionWithName:#"" andMessage:[NSString stringWithFormat:#"Object does not respond to selector %#", function]];
}
}
#catch (NSException * e) {
hasError = YES;
[self updateErrorMessage:[NSString stringWithFormat:#"Error processing command %#: %#", aCommand, [e reason]]];
}
#finally {
[function release];
[commandParts release];
}
if (hasError == YES) {
[appDelegate buildNewExceptionWithName:#"executeThisCommand" andMessage:self.errorMessage];
}
}
// this can return nil
-(NSString *)getQueryStringValue:(NSString *)name {
NSString *returnValue = nil;
if (queryString != nil) {
returnValue = [queryString objectForKey:[name lowercaseString]];
}
return returnValue;
}